You could find IDM 14.2 platform support matrix here - Platform Support Matrix - CA Identity Manager - 14.2 - CA Technologies Documentation
I am not sure whether AD 2019 is GA or not, but as per the platform support matrix (As of 11/22/2018) AD 2016 is the latest supported by IDM 14.2.
Connectors and Endpoint Types - CA Identity Manager - 14.2 - CA Technologies Documentation
Supported Connector Endpoint Types
The following matrix lists the supported endpoints for which connectors are formally provided.
Endpoint | Endpoint Release | IG | IG Mapping (Shallow / Deep) | IDM | Integrated IDM & IG | Server Platform | Agent - less | Comments |
---|
Microsoft Active Directory | 2008 R2 SP1, 2012, 2012 R2, 2016 | Yes | Shallow | Yes | Yes | CCS | Yes |
Provisioning Password Synchronization Agents
Endpoint | Comments |
Microsoft Active Directory/Windows | - 2012, 2012 R2, 2016
- 64-bit password synchronization agent supported
|
If this is your requirement, you can always go ahead and open an idea for product engineering team's review.
Here is the instructions to open an idea -Ideas
Regards
Ashok